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Income Taxes (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Deferred tax assets    
NOL carryforwards $ 781,000 $ 1,038,000
General business credits carryforwards 288,000 244,000
Stock based compensation 92,000 64,000
UNICAP 56,000 30,000
Allowance for doubtful accounts 3,000 3,000
Reserve for obsolete inventories 6,000 12,000
Reserve for asset retirement 14,000 14,000
Property and equipment (145,000) (159,000)
Deferred Tax Assets, Gross 1,095,000 1,246,000
Valuation allowance (1,095,000) (1,246,000)
Net $ 0 $ 0